新型炭材料（中英文）2024，Vol.39Issue(4)：655-667,13.DOI:10.1016/S1872-5805(24)60864-4
含氮/氯芳烃制备高性能合成沥青
Preparation of a high-performance synthetic pitch from aromatic hy-drocarbons containing N/Cl
摘要
Abstract
The preparation of a synthetic pitch from aromatic monomers could easily regulate structure orientation at the molecu-lar level,which would be useful in fabrication.An isotropic synthetic pitch was prepared by a chlorine-and/or nitrogen-induced sub-stitution polymerization reaction method using aromatic hydrocarbon precursors containing Cl and N,which for this study were chloromethyl naphthalene and quinoline.This method was verified by investigating the structural changes under different synthesis conditions,and the synthesis mechanism induced by aromatics containing Cl was also probed.The result shows that the pyridinic N in quinoline contains a lone pair of electrons,and is an effective active site to induce the polymerization reaction by coupling with aromatic hydrocarbons containing Cl.The reaction between such free radicals causes strong homopolymerization and oligomeriza-tion.A higher reaction temperature and longer reaction time significantly increased the degree of polymerization and thus increased the softening point of the pitch.A linear molecular structure was formed by the Cl substitution reaction,which produced a highly spinnable pitch with a softening point of 258.6 ℃,and carbon fibers with a tensile strength of 1 163.82 MPa were obtained.This study provides a relatively simple and safe method for the preparation of high-quality spinnable pitch.关键词
喹啉/1-氯甲基萘/合成沥青/可纺性/炭纤维Key words
Quinoline/1-Chloromethyl-naphthalene/Synthetic pitch/Spinnability/Carbon fiber分类
化学化工引用本文复制引用
张玉坤,林雄超,高红凤,席文帅,王彩红,王永刚..含氮/氯芳烃制备高性能合成沥青[J].新型炭材料（中英文）,2024,39(4):655-667,13.基金项目
This work was supported by the National Natur-al Science Foundation of China(22278420)and Cent-ral Universities outstanding youth team project of CUMTB(2023YQTD03). 国家自然科学基金资助项目(22278420) （22278420）
中央高校优秀青年团队项目(2023YQTD03). （2023YQTD03）
